Qtjiitcy moses



E. Q. MOSES.

PUMP COUPLING.

APPLICATION FILED JAN. 18, 1918.

Patented Oct. 14, 1919.

1 a no UNITED STATE nnnnnn armor Mcsns, or NEW roan, a. Y.

t mer-commas.

Specification of Letters Patent.

Patented @6130 141, 191%,.

Application filed Janu y 1%, 1918. Serial No. 212,395.

To all whom it may concern Be it known that T, EDMUND QUINCY Moses, a citizen of the United States, and a resident of New York. county of New York, and State of New York, have invented certain new and useful Improvements in Pump Couplings, of which the following is a specification.

The present invention relates to certain new and useful improvements in air pump couplings for air pressure containers, such as pneumatic tires, and more particularly to a coupling of this character to which is adapted to be applied a gage to indicate the pressure in the air container.

One object of the invention is to provide a pump coupling embodying novel features of construction whereby the supply of air from the pump is automatically and momentarily shut off from the air container and gage when the gage is applied to the coupling to determine the pressure in the container, thereby preventing the pulsations of the pump or the back pressure incident to forcing the air into thecontainer from afiecting the pressure age.

Further objects of the invention are to provide a device of the character described which is simple and inexpensive, which can be easily and automatically operated to cut off thevair supply from the pump by the attachment of the gage to the coupling, which can be readily applied to all standard forms of pneumatic tire valve casings, and which will not easily get out of repair.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawing, in which Figure 1 is a side elevation of a pump coupling constructed in accordance with the invention.

Fig. 2 is an enlarged transverse vertical sectional view taken on the line 22 of F ig. 1, and showing the parts of the coupling in position to allow air to pass from the pump to the air container.

rig. 3 is a similar view showing the parts I in a position to prevent passage of air from the pump into the container and so as to allow. the air to pass from the container into a pressure gage applied to the coupling. Fig. 4c is a horizontal sectional View on the line H of Fig. 3.

Corresponding and like parts are referred to in the following description and indi cated in all the views of the drawings by the same reference characters.

Referring to the drawings, the numeral 1 designates the body or casing of the coupling which is substantially cylindrical in shape and is provided with an axial bore 2 forming a valve chamber, with, which conimunicates the passage 3 of a laterally projecting pump connecting nipple 1 within which is arranged a check valve 5 to prevent escape of air from the air container or tire into which air is being forced. The lower end of the coupling casing 1 is provided with a tire valve casing coupling memher 6 which has a swivel connection 7 with the casing 1 and is provided with the usual packing washer 8. An inwardly projecting annular shoulder 9 is provided in the bore of the casing 1 and forms a valve seat, while a bushing 10 is threaded into the upper end of the casing 1 so as'to provide a second valve seat 11 which is spaced from the valve seat 9 and arranged oppositely thereto. A

valve sleeve 12 is loosely slidable through the bushing 10 and into the chamber or bore 2 of the casing 1, the said valve sleeve carrying a double faced valve 13 which is arranged between the two valve seats 9 and 11, the upper face 13" thereof being adapted to engage the valve seat 11, while the lower face 13 thereof cooperates with the valve seat 9. A. coil spring 14 isinterposed between a shoulder 15 in the bore of the casing 1 and the lower end of the valve sleeve 12, said spring normally forcing the upper face 13 of the valve 13 against its seat 11. The upper end of the valve sleeve 12 pro jects outwardly beyond the upper end of the casing 1 and is formed to receive a conventional pressure gage which is adapted to be pressed upon and yieldingly engage the outer end of the valve sleeve. When the valve 13 is in its normal position with the upper face 13 engaging the valve seat 11', as indicated by Fig. 2, the lower face 13 is removed from the valve seat 9 so that air from the pump connecting nipple 4: is free, to pass into the valve chamber 2 of the casing 1 and thence into the tire or other container through the coupling member 6, and the air is prevented from escaping from ,the upper end of the casing 1 by the upper face of the valve 13 engaging the seat 11.

The valve sleeve 12 is provided with an axial bore 12 which forms a valve chamber,

which near its lower end is provided with an inwardly projecting annular shoulder 12", the upper. end thereof having threaded therein a bushing 16 which is provided. on its lower face with a valve seat 16. A valve stem 17 is loosely slidable through the valve sleeve 12 and projects outwardly beyond both ends thereof, the said valve stem carrying a check valve 18 normally forced by a member carried by the gage which will engage the upper end of the valve stem 17 to force the valve 18 downwardly so that the air can readily pass out of the coupling into the pressure gage.

In a large number of pump couplings now in use no means is provided for cutting off the air supply from the tire or gage while a reading of the gage is being taken, and consequently incorrect readings are obtained which are presumably due, first, to the pulsations of the pump, second, to the fact that considerable time is required for the pressure in the tire to equalize that in the supply, and third, to the back pressure caused by the restricted valve opening of the tire which impedes the passage of the air, which back pressure is higher than the pressure in the tire. The present invention entirely overcomes all of these difiiculties, and insures a correct indication of the actual pressure in the tire. After the pressure gage has been applied to the upper end of the valve sleeve 12 and the check valve opened, the gage is forced downwardly so as to cause the valve sleeve to slide downwardly to unseat the upper face 13 of the valve 13 and seat the lower face 13 thereof on the valve seat 9, as indicated by Fig. 3. As the valve sleeve 12 is depressed by the gage the valve stem 17 is also moved downwardly so that the lower end thereof will engage the stem of the inflating valve of the tire or other container to hold the same open to allow air to pass from the tire into the pressure gage to determine the pressure in the tire.

The. age and valve sleeve 12 are held in this position until the reading is taken. While the parts are in this position, air from the pump is prevented from entering either the tire or the gage by the lower face 13 of the valve 13 engaging the valve seat 9, and the unseating of the upper face of the valve 13 from the valve seat 11 allows the air from the pump to escape from the valve chamber 2 upwardly through the space between the valve sleeve and bushing 10. Thus the only pressure indicated on the age is the actual pressure in the tire which can not be aii'ected in any manner by the air pump, the air supply being entirely cut oii from both the tire and the gage and relieved through the upper end of the casing 1 between the valve sleeve 12 and bushing 10. The action incident to taking a reading is only momentary, so that the escape of air from the pump supply is negligible, and there is no necessity for cutting it on from the pump. After the gage is removed the check valve automatically seats and the air is thus cut off from escaping from the tire. The action is substantially automatic by merely applying the gage to the valve sleeve 12 and pressing downwardly thereon, and'after the pressure is ascertained the parts automatically return to normal position by removal of the gage. The device made up of a minimum numher or parts d can not easily get out of irepair, and'it u be seen that, although simple, a coupling constructed in accordance with the invention will enable an accurate indication of the pressure in an air container to be ascertained while the pump is in operation. It is to be particularly noted that the device contains no sliding valves which require careful fitting and which are almost certain to wear and leak.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is

1. A device of the character described including a casing provided with a passage extending entirely therethrough, one end of which is normally open, means for connecting an air supply to said passage intermediate of the ends thereof, means normally closing one end of said passage, and means for closing the opposite end of the passage in the casing when the before mentioned means for normally closing the first mentioned end of the passage is opened. v v

2. A device of the character described in cluding a casing, means for connecting said casing to an inflating valve, means for connecting an air supply to said casing to r'orce air through the inflating valve, means in the casing for cutting off the air supply from the inflating valve, means for open ng a passage to the outer air to permit the air supply to blow 0d when cut or from the infiating valve, and means for establishing an air pressure connection from the inflating valve to a pressure gage when the air supply is cut ofi' from the inflating valve.

3. A device or the character described including a casing, means for connecting said casing to an inflating valve, means for connecting an air supply to said casing to force air through said inflating valve, a movable member in said casing having a seat adapted to be engaged by the press-on seat of a pressure gage, said member being adapted to convey air fromthe inflatin valve to the gage, and also to cut off the a1r supply from the inflating valve and gage while air is passing from the inflating valve to the gage, said member being adapted to be actuated to cut off the air supply from the inflating valve by the application of the pressure gage to the seat on said member, and means for normally closing the air passage from the inflating valve to the gage, said means being adapted to be opened by the application of the gage to said seat.

4. A device of the character described including a casing having a passage therein, means for connecting one end of said passage to an inflating'valve, means at the other end of the said passage for detachably receiving a pressure gage, means for connecting an air supply to said passage to force air through the inflating valve, means normally closing the passage to the pressure gage, said means being adapted to be opened by application of the gage, and means for cutting off the air supply from the inflating valve and gage while air is passing from the inflating valve to the gage.

5. A device of the character described incuding a casing having a passage therein,

means for connecting one end of said passage to an inflating valve, means for connecting an air supply to said passage to force air through the inflating valve, means normally closing the passage to the pressure gage, said means being adapted to be opened by application of the gage, and means for cutting ofl the air supply from the inflating valve and gage while air ispassing from the inflating valve to the gage, and means actuated by said means for cutting 0d the air supply to open the inflating valve. c

6. A. device of the character described including a casing having a passageextending therethrough, means for connecting one end of said passage to an inflating valve, means for connecting an air supply to said passage, a valve sleeve mounted in said passage and in communication therewith, said valve sleeve carrying a valve which is normally open to allow air to pass from the supply to the inflating valve but which is adapted to be closed to prevent passage of air into the inflating valve, and an automatic check valve for normally closing the ,outer end of said valve sleeve, said, check valve being adapted to be opened to allow air to pass from the inflating valve through the valve sleeve.

7. A device of the character described including a casing havinga passage extending t-herethrough, means for connecting one end of said passage to an inflating valve, means for connecting an air supply to said passage,

a valve sleeve mounted in said. passage and 1n communication therewith, said valve sleeve carrying a valve which is normally open to allow air to pass from the supply to the inflating valve and which normally closes the opposite end of said passage, and an auto-- matic check valve for normally closing the outer end of the said valve sleeve.

8. A device of the character described including a casing having a passage extending therethrough, means for connecting one end of said passage to an inflating valve, means for connecting an air supply to said passage, a valve sleeve mounted in said passage and in communication therewith, said sleeve carrying a valve which is normally open to allow air to pass from the supply to the inflating valve, the outer end of said valve sleeve being adapted to detachably receive a pressure gage, and an automatic check valve for normally closing the outer endof said valve sleeve, said check valve being adapted to be opened by application of the gage t0 the valve sleeve, the before mentioned valve on the valve sleeve being adapted to be closed to shut ofl the air supply from the inflating valve ant gage when air is passing from the inflating valve to the gage- 9. A device of the character described including a casing having a passage therein, means for connecting one end of said passage to an inflating valve, means for con necting an air supply ,to said passage, a valve sleeve slidably mounted in said passage and in communication therewith, said sleeve carrying a valve which is normally open to allow air to pass from the supply to the inflating valve, the outer end of said sleeve being adapted to detachably' receive a p ressure gage, and a valve stem slidably mounted in said valve sleeve and carrying a check valve which normally closes the outer end of the valve sleeve, said check valve being adapted to be opened by application of the gage to the valve sleeve, the before mentioned valve sleeve being adapted to be depressed to cause its valve to cut off the air a lar member in said casing having a seat adapted to be engaged by the press-on seat of a pressure gage, and valve opening means carried by said tubular member. I

11. In a device of the character described, a casing having means for attachment to an inflating valve, and means for connection with an air pressure supply, a, movable member in said casing having a passage therein adapted to communicate with a pressure gage, and valve means actuated by the movement of said member adapted to permit passage of air under pressure to said inflating valve in one position of said mem ber and in the other position of said member to close communication from said air supply to said inflating valve and to open communication from said air supply to the outer air to permit the air supply to blow off when communication between said air supply and said inflating valve is closed.

12. In a device of the character described, a casing having means for attachment to an inflating valve, and means for connection with an air pressure supply, spaced oppositely facing annular valve seats in said casing, and a movable member in said casing adapted to be connected with a pressure gage, said member carrying valves adapted to be alternately engaged with said valve seats and having a passage therein adapted to convey air from that part of the casing which is connected ,to the inflating valve to a pressure gage connected with said member. 13. A pump coupling having means for connection with an inflating valve, and means for connection with an air pressure supply, and a movable member in said coupling having a seat for engagement with the press-on seat of a pressure gage, and valve means adapted'to be actuated by the movement of said member when a gage is pressed on to said seat.

l-i. A pump coupling having means for connection with an inflating valve, means for connection with an air supply, and means for connection with a pressure gage, valve means in said pumpcouplingmovable by the movement of the pressure gage for cutting off communication between the pressure supply and the inflating valve, and means for cutting off communication to the gage except when the pressure supply is cut off from the inflating valve whereby direct action of the pressure from the air supply upon the gage is prevented. 15. In a device of the character described, a casing having means for attachment to an inflating valve and means for connection with an air pressure supply, annular valve seats in said casing and a tubular member movably mounted in said casing having anthe inflating valve to a pressure gage.

16. In a device of the character described, a casing having means for engagement with an inflating valve at one end thereof and being open at the other end thereof, said casing having spaced oppositely facingv annular valve seats therein and having means for connection with an air pressure supply opening thereinto between said valve seats, and a movable member mounted for axial movement within said casing, a portion of said member extending out of the open end thereof, valves carried by said member adapted to be brought into engagement alternately with the respective valve seats, said member having a passage way therein extending from one side of one valve seat to the opposite side of the other valve seat.

17. In a device of the character described, acasing having means at one end for attachment to an inflating valve and having an annular valve seat therein facing away from said attaching means and having means for connection with an air pressure supply opening thereinto beyond said valve seat, an annular member attached to the outer end of said casing having an annularvalve seat thereon facing said first named valve seat, a tubular member mounted in said casing for axial movement therein and having one end projecting through said annular member,

valves on said movable member adapted to valve seat thereon facing said first named valve seat, a tubular member mounted in said casing for axial movement therein and having one end projecting through said annular member, valves on said movable member adapted to be brought alternately into engagement with the respective valve seats by the movements of said movable member, and an air passage in said movable member, a movable valve opening element extending through the passage in said movable member, and a valve carried by said valve opening element adapted to close said assage. EDMUND QUINCY OSES. 

